GST invoices in 10 seconds. Track customers and payments. File GSTR-1 and 3B in one click. Works in your browser — no Tally, no CA chase, no ₹18,000 licence.
Everything a small business needs
Stop bouncing between Tally, Excel sheets, WhatsApp PDFs, and your CA's clerk.
Auto CGST/SGST/IGST split by state. HSN lookup. Save as draft or share as PDF — no typing tax columns.
Works in your browser — no Tally install, no ₹18,000 licence, no "which laptop is your data on" headaches.
GSTR-1 and GSTR-3B in the exact format gst.gov.in accepts. Upload, pay, done — without a CA for routine months.
Track who you sold to, who owes you, what you quoted. Built-in CRM, not a separate tool.
Record vendor bills. Input tax credit flows into your GSTR-3B automatically — no forgotten bills on the 20th.
Every filing download hashed (SHA-256). Daily off-site backups. If there is ever a dispute, we can prove exactly what you filed.
When month-end comes
You've already recorded invoices and vendor bills as you went. On the 5th, we hand you the JSON gst.gov.in accepts. Upload, pay, done — no CA chase, no Excel templates.
Month closes → net GST number is ready. No CA chase, no Tally export.
GSTR-1 + GSTR-3B in the official V4.0 schema. Upload and file in minutes.
SHA-256 audit trail. If there is ever a dispute, we can show the exact bytes you filed.
⚠️ Not tax advice. We compute your numbers; your CA signs off.
March 2026
ReadyOutput GST
₹48,200
on 42 invoices
Input credit
₹35,800
from 7 bills
Net payable
₹12,400
by 20 Apr
GSTR-1
Outward supplies
GSTR-3B
Net payable
Every feature you see in 21bill is available as a clean, well-documented API. Generate invoices from your website, e-commerce store, or internal tools in minutes.
import { Bill21 } from "@21bill/node";
const client = new Bill21(process.env.BILL21_KEY);
const invoice = await client.invoices.create({
customer: "cus_9hF2", // GSTIN auto-fetched
items: [
{ name: "Cotton Fabric", qty: 12, rate: 850 },
{ name: "Silk Blend", qty: 4, rate: 2400 },
],
send: ["whatsapp", "email"], // 1-tap delivery
});
// → invoice.pdf_url, invoice.gst { cgst, sgst, igst }21bill's AI reads bank statements, matches payments, drafts quotations, and answers GST questions — so you can focus on growing your business.
Honest pricing
Pay monthly. Cancel any time. No per-invoice fees, no add-on traps.
Solo business owner, under 50 invoices/mo
Growing teams with a cashier, salesperson, and a CA
Paying ₹18,000/year for a Tally licence? ₹4,788/year for Zoho Books? 21bill at ₹1,188/year does what 95% of Indian SMBs actually need.
"Switched from Tally to 21bill last month. My CA actually thanked me. The GSTR exports just work."
"The AI payment matching saved us 15 hours every month. Worth way more than ₹199."
"We integrated the API into our Shopify store in one afternoon. Customers get GST invoices automatically."
Sign up free. Send your first GST invoice today. ₹99 for the next 3 months — no credit card needed.